Feedback

Gembloux Agro-Bio Tech (GxABT)
Gembloux Agro-Bio Tech (GxABT)
MASTER THESIS
VIEW 78 | DOWNLOAD 476

Impacts of power lines on brown bear movement in central Sweden

Download
Desmecht, Bastien ULiège
Promotor(s) : Lejeune, Philippe ; Steyaert, Sam
Date of defense : 29-Aug-2017 • Permalink : http://hdl.handle.net/2268.2/3098
Details
Title : Impacts of power lines on brown bear movement in central Sweden
Translated title : [fr] Impacts des lignes électriques sur les mouvements de l'ours brun dans le centre de la Suède
Author : Desmecht, Bastien ULiège
Date of defense  : 29-Aug-2017
Advisor(s) : Lejeune, Philippe 
Steyaert, Sam 
Committee's member(s) : Dufrêne, Marc ULiège
Licoppe, Alain ULiège
Hebert, Jacques ULiège
Language : English
Number of pages : 56
Keywords : [en] Bear power lines movement response
Discipline(s) : Life sciences > Environmental sciences & ecology
Funders : Gembloux Agro-Bio Tech, département de gestion des ressources forestières
European Commission's Erasmus+ fund
Research unit : Gembloux Agro-Bio Tech, département de gestion des ressources forestières
Norwegian University of Life Sciences (NMBU)
Name of the research project : IMPACTS OF POWER LINES ON BROWN BEAR MOVEMENT IN CENTRAL SWEDEN
Target public : Researchers
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en bioingénieur : gestion des forêts et des espaces naturels, à finalité spécialisée
Faculty: Master thesis of the Gembloux Agro-Bio Tech (GxABT)

Abstract

[en] For decades climate change and renewable energy have been at the centre of media attention, as well as in private and public sectors. Sweden took on ambitious commitments to reduce the national emission of CO2, including promoting the switch to renewable energies, among which wind energy occupies an important place. However, its production requires building wind parks that are often placed in wildlife habitat for reasons mainly based on wind properties. Wind parks construction implies building the necessary infrastructure (roads and power lines) to support and maintain it and to transport the produced electricity. How these power lines and associated roads affect wildlife movement and behaviour remain important questions in wildlife management and conservation.
Recent advances in GPS telemetry and remote sensing technologies provide researchers with abundant data that can be used to investigate detailed questions about wildlife behaviour. Using these technologies, this report aims to determine whether brown bears (Ursus arctos) are affected by power lines in their general habitat selection behaviour in the intensively managed boreal forests of central Sweden. It also intends to determine whether bears adjust their movements in the immediate vicinity of those structures. Finally, it aims to determine whether the bear’s movement responses towards power lines are ambiguous with respect to reproductive status and season.
Maxent modelling showed relatively little influence of power lines on bear habitat selection, albeit that power lines explained a greater part of variation in habitat selection for specific reproductive classes and seasons. Movement analysis demonstrated that power lines had little influence on bears’ speed, with again more or less specific reactions regarding reproductive classes and seasons. Subadults, however, appeared to decrease their movement rates during the berry season. Movement analysis also demonstrated that bears’ speed is influenced by roads up to 275 metres from the feature.
Management strategies may include, besides minimizing the development of power lines in bear habitat, making transmission lines unsuitable as travel routes to reduce the impacts of human development and to restore the edge areas between the corridor and the forest.


File(s)

Document(s)

File
Access tfe_final_corpus.pdf
Description: -
Size: 1.56 MB
Format: Adobe PDF

Annexe(s)

File
Access tfe_final_annexes.pdf
Description: -
Size: 1.3 MB
Format: Adobe PDF

Author

  • Desmecht, Bastien ULiège Université de Liège > Master bioingé. gest. forêts & esp. nat., à fin.

Promotor(s)

  • Lejeune, Philippe Université de Liège - ULg > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels
  • Steyaert, Sam

Committee's member(s)

  • Dufrêne, Marc ULiège Université de Liège - ULg > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
    ORBi View his publications on ORBi
  • Licoppe, Alain ULiège Université de Liège - ULg > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels
    ORBi View his publications on ORBi
  • Hebert, Jacques ULiège Université de Liège - ULg > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels
    ORBi View his publications on ORBi
  • Total number of views 78
  • Total number of downloads 476










All documents available on MatheO are protected by copyright and subject to the usual rules for fair use.
The University of Liège does not guarantee the scientific quality of these students' works or the accuracy of all the information they contain.